u32 *TW (tw_timer_expire_timers) (TWT (tw_timer_wheel) * tw, f64 now);
u32 *TW (tw_timer_expire_timers_vec) (TWT (tw_timer_wheel) * tw, f64 now,
u32 * vec);
u32 *TW (tw_timer_expire_timers) (TWT (tw_timer_wheel) * tw, f64 now);
u32 *TW (tw_timer_expire_timers_vec) (TWT (tw_timer_wheel) * tw, f64 now,
u32 * vec);